The September 1986 issue of R/C Report had their "shootout" of 26 40 sized engines with RPM and thrust ratings, etc.

Engines reviewed: Rossi, Webra Speed, HB 40, Enya 40 CXTV, OS 40 FSR, OPS 40, HB, K&B PUMP,OS 40 FSRABC, Fox 40, Picco, Irvine, Supertigre 40 ABC, HP 40 Gold Cup, Royal 40, COMO 40 Webra Siverline, Thundertiger 40, Webra Blackhead, Como 40 Ring, Supertigre 40 Bullring, Supertigre S40, OS 40 FP, DH 40 ABC, K&B 40

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